Dont boot , 3 green light on no LCD didplay

if say wanting to use very old linux here? not said what.
the coin cell battery new is installed. first
the power on mobo, no pci/agp cards.
USE REAR VGA PORT TO MONITOR and usb keyboard.,
power on and./ go to bios.
key (may fail if caps lock set wrong)
or this (control + Alt + del) read page 40
see bios page 1
page 1 right pane, click load optimized defaults
set time and date
set boot device in boot order page
exit save key now
now PC can boot to things listed in boot order bios
1 floppy
2: hdd
3: cd
boot from other device (enabled)
next it boot priority page. IDE , or usb etc.
save all changes and exit.
beeps
1= I am ok, good. silly 2005 era, sure.
2=-
1 Long Beep, 2 Short Beeps video card error


1 Long Beep, 3 Short Beeps video ram fails, or DDR2
1 High Pitched Beep, 1 Low Pitched Beep (Repeating) = CPU OVERHEATING OR BAD CPU

1 High Pitched Beep (Repeating)= CPU OVEHEATINGOTHER BEEP CODES, BAD DDR1 MEMORY.

17 YEAR BEEPS OUCH HARD TO FIND.

Try link: http://blog.parts-people.com/2014/06/27/dell-inspiron-m501r-m5010-beep-codes-diagnostic-indicators-2/ How to identify beep codes: When a laptop or computer first powers on, it goes through an initial set of diagnostic tests to make sure vital components are preforming correctly. These tests are called POST or Power On Self Test. When a test fails, the user is notified via POST codes, Light codes, or Beep codes. For diagnosing Beep codes you need to:

• Power on the laptop or restart it if it is already on.
• Listen to the number of consecutive beeps when the computer begins to boot. Restarting the laptop may be necessary and should not harm the laptop at this time.

Dell Inspiron M501R (M5010) Beep Codes # of Beeps Description Possible Cause(s) 1 BIOS ROM checksum in progress or failure System board failure, covers BIOS corruption or ROM errors. 2 No Memory (RAM) detected Memory or Memory slot failure 3

• chipset Error (North and South bridge error, DMA/IMR/Timer error)
• Time-Of-Day Clock test failure
• Gate A20 failure
• Super I/O chip failure
• Keyboard controller test failure

System board failure 4 Memory read / write failure Memory failure 5 Real Time Clock (RTC) power fail CMOS battery failure 6 Video BIOS test failure Video subsystem failure 7 CPU Cache test failure Processor failure or motherboard failure 8 LCD LCD failure Most Common Fixes:

• 1 Beep: Replace the motherboard / system board.
• 2 Beeps: Reseat the memory or replace the memory.
• 3 Beeps: Replace the motherboard / system board.
• 4 Beeps: Reseat the memory or replace the memory.
• 5 Beeps: Replace the CMOS battery.
• 6 Beeps: Reseat or replace the video card or replace the motherboard / system board.
• 7 Beeps: Reseat or replace the CPU or replace the motherboard.
• 8 Beeps: Reseat the LCD cable or replace the LCD screen.

Hello here is the intel homepage:

https://downloadcenter.intel.com/SearchResult.aspx?lang=eng&ProductFamily=Desktop+Boards&ProductLine=Intel%C2%AE+845+Chipset+Family+Boards&ProductProduct=Intel%C2%AE+Desktop+Board+D845GVAD2

Try to renew the power supply, with one you know is working.
I think that`s the problem.

The problem could ofcourse also be the mainboard itselves failing.
There is not much to do about that, other than renew the mainboard or buy a new pc.

Good luck

Please read this:

DELL BEEP CODES
Beep Codes Beep Code Description Failure Coverage 1 System Board: BIOS ROM failure System Board, covers BIOS corruption or ROM error 2 Memory No Memory / RAM detected 3 Chipset Error (North and South Bridge Chipset DMA/IMR/ Timer Error for Intel platform); Chipset Error System Board Chipset Failure Time-Of-Day Clock test failure. Gate A20 failure Super I/O chip failure Keyboard controller test failure. 4 RAM Read/Write failure Memory failure 5 RTC Power Fail. CMOS battery failure 6 Video BIOS Test Failure Video card / chip failure 7 CPU Cache Test Failure CPU failure 8 LCD LCD failure

These are the Dell beep codes.
DELL BEEP CODES
Beep Codes Beep Code Description Failure Coverage 1 System Board: BIOS ROM failure System Board, covers BIOS corruption or ROM error 2 Memory No Memory / RAM detected 3 Chipset Error (North and South Bridge Chipset DMA/IMR/ Timer Error for Intel platform); Chipset Error System Board Chipset Failure Time-Of-Day Clock test failure. Gate A20 failure Super I/O chip failure Keyboard controller test failure. 4 RAM Read/Write failure Memory failure 5 RTC Power Fail. CMOS battery failure 6 Video BIOS Test Failure Video card / chip failure 7 CPU Cache Test Failure CPU failure 8 LCD LCD failure

I'm going to take a stab and assume the laptop is beeping after you start it up... if it is this is called a beep code, its telling you something is wrong with it or something has changed. F2 or F3 will probably take you into its BIOS or give you access to the boot order. When I used to upgrade memory in dell latitudes it would beep on boot and say something to the effect of 'amount of system memory has changed, press F1 to continue or F2 for bios'. If you made changes to the laptop's physical components it is basically telling you something has changed and wants you to go into its BIOS to confirm. If you have done nothing to do and its beeping on boot, then its telling you there's something wrong. You will be to determine the make and model of the laptop and then obtain its service manual to look up what the beep codes indicate... there are sort of like morse code, 2 beeps means this, 3 beeps means that etc. What is the make and model and did you do anything to do (i.e. upgrade memory) before this started happening?

Remove the 1 gig chip. Pull you battery out and unplug the laptop. Hold the power button in for 10 seconds. Put the battery back in and plug the laptop back in again and try booting it up. This should reset the BIOS and allow it to boot. The beep codes you are talking about are a memory beep code and it is normally caused by adding memory or a loose memory stick. Also try pulling the existing memory and resetting it.

is the bios battery new?try reinserting the battery and the memory card

does the monitor is getting on....do you see anything in the monitor?

well its quite simple.you have set the wrong latency for rams.
I suggest you put a latency around 3
reset the bios and check the latencyes..you know that you must have all the rams from the computer to the same data..like all the timings or latency.
good luck..
bye bye